group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
37 | 246 | 22 | 147 | 16.45 | 49.62 | -33.34 | 69.18 | 0.5661 | 1647.7 | 582.7 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
37 | 224 | 22 | 134 | 16.24 | 49.79 | -33.17 | 69.46 | 0.5631 | 1671.0 | 578.7 | |
0 | 6 | 0 | 4 | 18.83 | 48.99 | -33.97 | 65.44 | 0.5836 | 810.0 | 638.7 | |
0 | 7 | 0 | 4 | 18.48 | 48.52 | -34.44 | 66.24 | 0.5883 | 720.0 | 615.2 | |
0 | 9 | 0 | 5 | 18.53 | 46.51 | -36.45 | 67.02 | 0.6142 | 849.0 | 619.1 |
Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
that the umbra consists of fragmented regions which cannot be separated without losing umbral area. In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2. |
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Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
that several umbras have a common penumbra, e.g. -7 means that the given umbra shares a penumbra with umbra No.7, and the WS value is indicated at No.7. |
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Corr. U | - Corrected umbra area in millionths of solar hemisphere, for negative values see above | |
Corr. WS | - Corrected whole spot area in millionths of solar hemisphere, for negative values see above | |
B | - Heliographic latitude B; positive: North, negative: South | |
L | - Heliographic longitude L | |
LCM | - Longitudinal distance from the Sun's central meridian | |
Pos. angle | - Position angle | |
r | - Distance from the centre of Sun's disc in terms of Sun's radius | |
MU | - Mean magnetic field within the umbra contour averaged the pixel values with sign. | |
MP | - Mean magnetic field within the penumbra contour averaged the pixel values with sign. |